Question

suppose I have a mysql table like following:

     id value
     1   01
     2   03
     3   02
     4   15
     5   05
     6   04
     7   06
     8   10
     9   07
     10  09
     11  08
     12  11
     13  12
     14  14
     15  13
     16  16

How can I convert them to a string like this:

  01,03,02,15|05,04,06,10|07,09,08,11|12,14,13,16

any help will be greatly appreciated, thanks!

Answer 1

In general you can always typecast a value to become a string:

$str = (string) $i["mysql_field"];

I think what you are looking is something like this (without knowing how your query is):

$counter = 0;
$result = "";
$sql = mysql_query(...);
while ($i = mysql_fetch_array($sql)){
    $result .= $i["value"];
    if ($counter == 3){
        $counter = 0;
        $result .= "|";
    }else{
        $result .= ",";
        $counter++;
    }
}

This will add the “|” character for every 4th iteration.